diff --git a/src/checks.c b/src/checks.c
index c175a752d..e31eb1735 100644
--- a/src/checks.c
+++ b/src/checks.c
@@ -1997,6 +1997,7 @@ static int connect_proc_chk(struct task *t)
 
 		environ = check->envp;
 		extchk_setenv(check, EXTCHK_HAPROXY_SERVER_CURCONN, ultoa_r(s->cur_sess, buf, sizeof(buf)));
+		haproxy_unblock_signals();
 		execvp(px->check_command, check->argv);
 		ha_alert("Failed to exec process for external health check: %s. Aborting.\n",
 			 strerror(errno));